Labor Offices in the United States and in Canada : Bulletin of the United States Bureau of Labor Statistics, No. 621
United States. Bureau of Labor Statistics. "Labor Offices in the United States and in Canada : Bulletin of the United States Bureau of Labor Statistics, No. 621," Labor Offices in the United States and Canada (August 1936). https://fraser.stlouisfed.org/title/4199/item/494434, accessed on March 28, 2024.